CAJ | 학술논문

通过对钻井设备的优选、井身结构的优化、钻头及钻具组合的优选、钻井参数及钻井液性能的优化、油气层保护技术的研究与应用, 形成了一套适合于古巴白垩系岩层的大位移水平井钻井技术. 合理的井身结构、轨道优化设计、优选钻井液体系和进行摩阻分析是保证大位移井顺利施工的重要技术措施. 经过对古巴SEB-20大位移水平井钻井过程中5次开钻钻井工艺的设计与施工进行分析, 指出大位移水平井钻井施工的特点以及适用于大位移水平井钻井的工艺及钻具组合、井身结构等. 设计结果在现场进行了工程应用, 应用效果良好, 达到了设计目的, 并且缩短了钻井周期, 为同类井的钻井施工提供了借鉴和指导依据.
통과대찬정설비적우선、 정신결구적우화、 찬두급찬구조합적우선、 찬정삼수급찬정액성능적우화、 유기층보호기술적연구여응용, 형성료일투괄합우고파백성계암층적대위이수평정찬정기술. 합리적정신결구、 궤도우화설계、 우선찬정액체계화진행마조분석시보증대위이정순리시공적중요기술조시. 경과대고파SEB-20대위이수평정찬정과정중5차개찬찬정공예적설계여시공진행분석, 지출대위이수평정찬정시공적특점이급괄용우대위이수평정찬정적공예급찬구조합、 정신결구등. 설계결과재현장진행료공정응용, 응용효과량호, 체도료설계목적, 병차축단료찬정주기, 위동류정적찬정시공제공료차감화지도의거.
We developed a set of ERW drilling techniques suitable for Cuba Cretaceous strata, through optimization of drill-ing equipment, wellbore configuration, drill bit and drill assembly, drilling parameters and drilling fluid performance, and research and application of oil/gas layer protecting techniques. Rational wellbore configuration, trajectory optimization de-sign, optimization of drilling fluid system, and carrying out friction resistance analysis are important for successful ERW drilling. By analyzing the design and construction of five drilling processes used for SEB-20 ERW drilling, we figured out the characters of ERW drilling and the process and drill assembly as well as wellbore configuration applicable for ERW drilling. The designing results have been applied on the site and achieved the designing goal, shortening drilling cycle and providing reference and basis for drilling similar wells.